Episode Name: Catch-22
Episode Overview: Desmond convinces Hurley, Jin, and Charlie to follow him on a trek through the jungle after he receives a series of visions. Flashbacks reveal the time that Desmond spent with a cloister of monks. Meanwhile, a despondent Kate turns to Sawyer for companionship after seeing Jack and Juliet together.
Episode Number: 17
Episode Season: 3
Episode First Aired: 2007-04-18